These days, hair dryer coiled actually. There is the Dai Sen of high-end course before, there is the millet of civilian course after. It is in the market of all peace, jumped out suddenly market of Dai Sen of race to control, make the brand of of all kinds and homebred hair dryer that controls millet price. Flashy, of all kinds blower enters masses field of vision. According to statistic, 2021 first half of the year, turnover of our country hair dryer is 2.76 billion yuan, rise compared to the same period 41.3% , retail volume is 13.81 million, rise compared to the same period 40.9% . Our country hair dryer entered second for generations as the development of 5G, people is older and older also to the demand of personalized hair dryer.
Dai Sen hair dryer meanwhile, bo fine enhanced nylon to make the star material of hair dryer crust stealthily, made the mark sex material of hair dryer of high end of second for generations. Bo fine enhances PA66 to be used at the bolwtorch of high quality hair dryer normally, can rise to add intensity and the effect that increase be heated capacity. But ask as the function to blower taller and taller, serve as crust originally advocate the ABS of material is enhanced by Bo fine gradually PA66 place is replaced. Use PA66 V0 level flame retardant the poetic favour hair dryer of material is current, high-powered Bo fine enhances influence preparation the finishing of fine of the length that the main factor of PA66 composite material includes Bo fine, Bo and its the reservation length in matrix. So the manufacturing influencing factor that next we have a look at Bo fine to enhance PA66 together when ~ Bo fine enhances the length fiber of PA66 fibre glass, fibrous length is one of main factors that decide fiber enhances composite material. Increase in common short staple thermoplastic plastic in, fiber length is only (0.2~0.6) Mm, suffer when material so when force is destroyed, because fibrous length is shorter, make its intensity basically did not get using, and the mechanical property that the end that uses fiber to enhance nylon uses fibrous tall tigidity and high strenth to raise nylon namely, because this fiber length is right,the mechanical function of goods has move and its main effect. Enhance means photograph to compare with short Bo fine, the modular capacity that grows Bo fine to enhance nylon, intensity, be able to bear or endure creep sex, fatigue resistance, impact resistance and hear resistance, wearability all get rising, widened its wait for the application inside the domain in car, electric equipment, machinery and war industry. The adhesion between the fine of finishing Bo of fibre glass and matrix is influence composite material the another main factor of mechanical function. The ability when Bo fine enhances polymer to form effective interfacial felt only has good performance. Enhance colophony of hot solid sex or polarity to Bo fine thermoplastic colophony composite material, can use coupling agent to undertake handling to Bo fine surface, make colophony and Bo fine surface form chemical bond, obtain effective interfacial felt thereby. Fibre glass withholds length mediumly in nylon matrix people increases to Bo fine thermoplastic resinous mixes reach goods to shape craft had much research, the length of fine of the Bo in discovering product is in by limitation from beginning to end 1mm less than, with initiative fiber length photograph comparing drops substantially. The phenomenon that ruptures to machining the fiber in the process again next undertook study, discovery machines craft condition and other all sorts of elements rupture to fiber influential. Should have avoided in the design that equipment element reachs spray head in screw narrow and the mutation on the structure, if flow path crosses narrow word to be able to affect the free movement of Bo fine, and generation cuts action to cause rupture; The extremely easy also generation is additional stress if if have mutation,going up centers the structure and destroy Bo fine. Craft element 1. The temperature range that when treatment of makings canister temperature enhances a makings, uses should be in 280°C above. Because,this is, be like higher when temperature when, the viscosity of fuse-element will be reduced greatly, make action is reduced greatly in the shearing force on fiber, the ruptures to basically happen in extruder melt of Bo fine paragraph, bo minute is added in the mouth that impose fine, because Bo fine is to be added already in the polymer of melt, after fuse-element and Bo fine blend, rise Bo fine bag, have lubricant protection effect. This reduced fibrous excessive break off and of canister of screw, machine wear away, and be helpful for Bo distributing. 2. Many the temperature that the mechanism that fine of the Bo in mould temperature mould destroys basically depends on a mould and fuse-element temperature photograph are lower than wanting, fuse-element is flowed into model after antrum, form instantly on wall freeze a layer, and the ceaseless refrigeration as fuse-element, the ply that freezes a layer increases ceaselessly, as a result flows at intermediate freedom the layer is smaller and smaller, a conglutinate is in fine of Bo of the part in fuse-element freeze on the layer another to still flow as fuse-element, formed very large shearing force to be brought about then to Bo fine thereby rupture. The old young general that freezes the ply of the layer to perhaps say free flow layer affects the size of the flow of fuse-element and shearing force directly, affect the rate that is destroyed to Bo fine then. Freeze the phenomenon that after the ply of the layer appears to increase first as the space that leaves runner, reduces. Be in only mid, freeze a layer to ply lets time and increase. Be in so model the extreme of antrum, fibrous length can regain longer level again. 3. The influence of screw rotate speed to Bo fine length of screw rotate speed raise what will bring about action to go up in Bo fine directly to cut stress rise, and on the other hand the increases to be able to accelerate polymer again model of screw rotate speed changes a course, reduce fuse-element viscosity, the stress that reduces action to go up at fiber, because double screw provided the major energy that melt place requires,this is. So screw rotate speed is put in two opposite sides to the influence of fiber length. 4. The affiliation of Bo fine the position and means polymer melt are squeezed when going out, it is to be mixed in all commonly even hind, unified join in mouth of feed in raw material, but Bo fine enhances nylon melt to cram the course that give in, need to use polymer to be joined in mouth of feed in raw material, after waiting for its melt model to change, add Bo minute in mouth of downstream feed in raw material again, use follow-up feed in raw material namely. Because,this is, if mix Bo fine and solid state polymer by mouth of feed in raw material, can cause fine of the Bo in the process is carried in solid excessive break off, screw and machine brief inside the surface also wears away badly because of be contacted directly with Bo fine and creating facility.
